My nemesis fish in college was a blue spotted jawfish.....no matter what, I couldn't keep one. I had a 20 gallon tank. Now I have a 90 with a powder blue tang, mcosker's flasher, and a pair of cinn. clowns. The blue spot has come down with an illness similar to the one I had in college. It looks as if it has an irritation on his lip. A little lose skin?? I don't know if I can get a good pic. All h2o parameters have checked out great. All other fish and corals are very healthy. Is it possible that it's irritated by a bristleworm. I have a large one that's about 8". I say this because of the amount of time the spend in the sand. Anyone?